Skip to main content

Table 2 Meta-analysis of salivary cortisol markers in PTSD

From: Salivary cortisol in post-traumatic stress disorder: a systematic review and meta-analysis

  Participants with PTSD, n controls n SMD (95% CI) p value Heterogeneity Begg’S test Kendall’s tau statistic (p value)
Q statistic (DF; p value) τ2 I2
all 1064 2322 −0.28 (−0.53; −0.04) 0.022 236.00(33 < 0.0001) 0.427 86.00% −0.1907, p = 0.117
am 628 1316 −0.39 (− 0.70; − 0.09) 0.012 132.68(20 < 0.0001) 0.412 84.90% −0.2000, p = 0.219
pm 436 1006 −0.11 (− 0.52; 0.30) 0.598 96.40(12 < 0.0001) 0.476 87.60% −0.1795, p = 0.435
<2007 659 734 −0.13 (− 0.50; 0.23) 0.479 163.59(18 < 0.0001) 0.568 89.00% −0.2281, p = 0.186
≥2007 405 1588 −0.48 (− 0.75; − 0.20) 0.001 52.71(14 < 0.0001) 0.199 73.40% −0.2952, p = 0.140
  1. PTSD post-traumatic stress disorder, SMD standardised mean difference, DF degrees of freedom